var dialog;
function BoothView( id , obj ){

			//IFRAME切り替え
			document.getElementById('id_prev').src="GetPage.ashx?" + id;

			if( dialog )
			{
				dialog.show(Ext.get(obj).dom);
				return;
			}

            if (!dialog) {	
                dialog = new Ext.BasicDialog("preview-dlg", {
                	    modal:true,
                        autoTabs:false,
                        width:1040,
                        height:740,
                        shadow:false,
                        resizable:false,
                        proxyDrag:true
                });
                dialog.addKeyListener(27, dialog.hide, dialog);
                //dialog.addButton('最小化', dialog.collapse, dialog);
                dialog.addButton('閉じる', dialog.hide, dialog);

   				dialog.show(Ext.get(obj).dom);
			}
}